Morfini M, Longo G, Matucci M, Vannini S, Messori A, Filimberti E, Duminuco M, Avanzi G, Rossi-Ferrini P. Cryoprecipitate and Factor VIII commercial concentrates: in vitro characteristics and in vivo compartmental analysis.
LA RICERCA IN CLINICA E IN LABORATORIO 1984;
14:681-91. [PMID:
6441235 DOI:
10.1007/bf02906309]
[Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
In vitro and in vivo characteristics of cryoprecipitates and three commercial factor VIII concentrates (Kryobulin, Hemofil and Koate) were comparatively studied. Factor VIII:C/VIIIR:Ag ratio was very low in all commercial concentrates without differences among them. Conversely, the decrease of factor VIIIR:WFRCof was proportional to the degree of purity. Factor VIII:C/VIIIR:WFRCof ratio was shown to be a reliable index of factor VIII complex denaturation. Crossed electroimmunoassay showed a faster migration of factor VIIIR:Ag only in commercial concentrates. Using a two-compartmental open model that accounts for endogenous synthesis of factor VIII:C, single-dose kinetics of factor VIII:C were studied in 23 patients with classic hemophilia. Good agreement between measured and fitted values of factor VIII:C plasma concentration was observed. beta half-life was shorter in high purity concentrates and longer in intermediate purity concentrates and cryoprecipitates.
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